the woman used the n word to refer to president obama. wxia, our sister station in atlanta, says a number of people expressed concern. one viewer asks, "does this young lady care for african americans as she does all patients? " the medical practice says the woman's views do not reflect the clinic's views. >>> around our area in the last couple years the food trucks in d.c. have exploded. there are hundreds now serving everything from korean tacos to mac and cheese. >> tonight some of those truck owners are complaining saying new regulations proposed by the city could drive them right out of business. bruce leshan with their story. >> reporter: the step says that the basic issue -- the city says that the basic issue is this. this is public space, the sidewalks and the streets, and yet on this food truck friday on farragut square you can see it's a little tough for people to wind their way through the lines waiting to fill up. >> the public did not want us here, we would not be here. >> from the curb to the end of the sidewalk how much spa